APA (7th ed.) Citation

Mansfield, N. (1993). The joy of X: An overview of the X Window system. Addison-Wesley.

Chicago Style (17th ed.) Citation

Mansfield, Niall. The Joy of X: An Overview of the X Window System. Wokingham u.a: Addison-Wesley, 1993.

MLA (9th ed.) Citation

Mansfield, Niall. The Joy of X: An Overview of the X Window System. Addison-Wesley, 1993.